Vietcong Purple Haze for Xbox. It's personal because the one for PC is my favorite game. Xbox version had horrible graphics​, poor ai, and actually used the old fog trick. It was just plain boring also. No one played online and I don't blame them.

Superman: The Video Game
It is truly worse game ever I played in my life. I am huge fan of DC and I found this game broke my childhood favorite hero. That is why I turned to Spider-Man from Marvel, since I am still in DC so batman for the win! That kind of game is really horrible, bad gameplay and horrible story. I cannot describe at all but it is very stupid game ever I played. Like, seriously? What is the point to be superman if you're limit to many activity and some lame thing to do in the game like, "Oh you are rescuing Lois Lane? You need to fly those circle thingy to provide me that you can save her! In otherwise, the time running out and I will kill her." Something like that. That is why I threw that game away when I was a kid on gameboy and even Nintendo 64. Ugh, what a waste game that I has brought.Screw Superman, be Batman Forever!

It is surely not the worst video game ever --I have not played all video games ever-- but in terms of deliberately regressive wasted potential and abuse inflicted on me personally, I have a particular loathing for 2004's Sword of Mana. It was a "remake" of 1991's gameboy release Final Fantasy Adventure which, apart from lovely graphics and allowing you to choose the other protagonist (although the ending in which she has an unsatisfying secondary role is still the same), took everything about the original and broke it to conform to some contemporary idea of what a game in the "mana" series was, which evidently means being tiresome and unremarkable.
The dungeons are now all linear, you can't interact with the scenery half as much, the over-world is now a disjointed series of non-connected areas. Formerly you could access them all by traveling on your chocobo, but no we can't have a CHOCOBO in a MANA game, or apparently anything else that is fun, so now you can only use a series of large cannons to go exactly where the game wants you to when it wants you to. They made getting shot out of a big gun boring. There are loads of extraneous pretentious annoying characters screwing with the formerly functional story, following you along telling you what to do LONG after they should be dead or minding their own business, occasionally prompting tiresome side quests that get you totally useless items. The "quests" also tend to involve beating up a usually unspecified monster for hours and hours until they drop just the right item which has no other purpose than fulfilling the quest. The dialog is moronic but clearly well-translated and not a consequence of hardware limitations a la regular gameboy. The few treasures you DO find in the wild can't actually be used; you need to go back to your ludicrous cactus house and "forge" equipment out of them, totally breaking any sense of flow or urgency. I even like the dumb cactus house but it just plain doesn't belong in some places. The weapons aren't balanced at all and since you have to make them yourself there is no incentive to use the less useful ones, which are, appropriately enough, CONSIDERABLY less useful than they originally were. And finally for no good reason they turned the boss music into a dorky remix but then cut off the actual conclusion to it.
And I was dumb enough to try and do everything in that game, even though I hated it and it was endless. There is no payoff whatsoever. And look now I just spent maybe 20 minutes typing all that. When will it end?

A shitty copy of Geometry Dash but there were just 3 levels and it had just a square which jumps over another squares , and nothing else. In 3 minutes the game could be won without any skills.
The game is not The Impossible Game; It is worse than that.

I blame my sister for this, Fight Club the game. She somehow convinced me to rent this game after she pointed out that you can create a character. She knew how much I loved the create a character in the WWE games and she used against me. There is BARELY any customization in this game. The most "creative" character I made was Skinhead Larry, it's not as glamorous as it sounds. The fighting feels loose and stiff AT THE SAME FUCKING TIME!!!But the one kinda cool thing the game does during fights is that you can break an opponents arm and they can't use it for the rest of the fight. But they screw you over with that mechanic, if you have a broken arm, it stays broken until you go to the in game hospital and pay to fix it, it's one the most monotonous things I dealt with in any game ever. I barely managed to get through the "story" mode. After 2 days I was done with this game, and that was the last time I let my sister pick a game.

Amazons and Aliens. Its an RTS game that is slow as crud when it comes to gathering resource, training units, building buildings, or just doing anything really. Stronghold played like Sonic the Hedgehog by comparison. It also tried to have humor, with alcohol and sexual themes, yet was surprisingly minimal with its violence.

I also played a PC game based off of Survivor, and it was really boring and pointless.

I'd go with Phantasy Star Universe since it is the only game I recall buying which I got completely insulted and pissed off by and never touched again. The "protagonist" in that game is some stupid kid meant to be "cool" which is obviously meant to appeal to the person who buys the game, which I find actively insulting. He rides a hoverboard and keeps yelling and cheering with all the "wahaaaaay! wow! wooo!" shit, then he crashes into a car. Sadly rather than dying a girl gets out and heals him then he fucking gawps at her for ages because OH MY GOD A GIRL MUST BE IN LOVE WITH HER INSTANTLY NOW AND BE CRINGY AS FUCK, she rightly leaves but only after giving her own gawping look, as if this was them falling in love with each other which is extra insulting since this protagonist doesn't deserve a good end. Then he goes on to find his sister who had her purse stolen, and rather than doing anything heroic like fighting the people to take it back he whines at them for ages until they give it back seemingly just to get rid of the guy from their lives. It was that point I turned the game off and never played it again.

Fuck whoever came up with that idea of a character and fuck thinking it would appeal to me as the person playing the game.

Courier Crisis on PS1. The graphics are shitty (even for PS1 standards), the collision detection is sometimes none existent and sometimes you bounce off the air. The controls are messed up (not very responsive) and the gameplay sucks, overall.
It tried hard to be a Crazy Taxi clone but failed miserably.

I'll just say that Sonic Adventure 2 is horrendous. The only decent parts are the chao stuff and a few sonic/shadow levels(and music). Everything else I pretty much hate. Probably the worst game I have in my Steam Library